Process for the chlorination of toluene
US4024198A · kind A · utility
2Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1975 |
| Grant date | May 17, 1977 |
| Priority date | — |
| Expiry date | Aug 1, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
In the process for the nuclear chlorination of alkylbenzenes, such as toluene, in the presence of a para-directing catalyst system comprising a substantially iron-free Lewis acid catalyst and thianthrene compound co-catalyst, wherein the reaction mixture is in contact with iron or an alloy thereof, the para-directing effect of the catalyst system is improved by the addition of an amide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.